PAPERmaking! Vol8 Nr3 2022

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‡ŽŽ—Ž‘•‡ƒ‘Ƥ„‡”•Ȁ ’‘Ž›˜‹›ŽƒŽ ‘Š‘Ž„Ž‡†•



ƒ•ƒ‡ƥ ‹‡– ‘ƒ–‹‰–‘‹’”‘˜‡ –Š‡Š›†”‘’Š‘„‹ ƒ†‘Ž‡‘’Š‘„‹  ’”‘’‡”–‹‡•‘ˆ’ƒ’‡” Šƒ ‘‰ —ƒ‰ ͷ ǡ‹›—ƒ‰ ͷ ǡ—Šƒ‰ ͸ ǡ—‡‰ ͸ ǡ ‡‹‰—‘ —ƒ ͸ Ƭ‹š‹‰‹ƒ ͷ * Š‡‡ơ‡ –‘ˆ ‡ŽŽ—Ž‘•‡ƒ‘Ƥ„‡”•ȋ •ȌȀ’‘Ž›˜‹›ŽƒŽ ‘Š‘ŽȋȌ ‘ƒ–‹‰‘–Š‡Š›†”‘’Š‘„‹ ǡ ‘Ž‡‘’Š‘„‹ ǡƒ†•–”‡‰–Š’”‘’‡”–‹‡•‘ˆ’ƒ’‡”™‡”‡‹˜‡•–‹‰ƒ–‡†ǤŠ‡”‡•—Ž–••Š‘™‡†–Šƒ––Š‡•‹œ‡ ‘ˆ„ƒ„‘‘Ƥ„‡”•ȋ •Ȍ†‡ ”‡ƒ•‡†•‹‰‹Ƥ ƒ–Ž›ƒ†–Š‡ ”›•–ƒŽŽ‹‹–›‹ ”‡ƒ•‡†•‹‰‹Ƥ ƒ–Ž›ƒˆ–‡” „‹‘Ž‘‰‹ ƒŽ‡œ›‡–”‡ƒ–‡–ǤŠ‡ƒ˜‡”ƒ‰‡Ž‡‰–Š‘ˆ •‘„–ƒ‹‡†„›Š‹‰Š’”‡••—”‡Š‘‘‰‡‹œƒ–‹‘ ™ƒ•͸Ǥͺσǡ–Š‡†‹ƒ‡–‡”™ƒ•͸;Ǥͽǡƒ†–Š‡ ”›•–ƒŽŽ‹‹–›™ƒ•ͼ͹Ǥͼ͹άǤŠ‡–Š‡ ‘ƒ–‹‰™‡‹‰Š– ‘ˆȀ ™ƒ•͸ǤͶ‰Ȁ ͸ ƒ†–Š‡ †‘•ƒ‰‡™ƒ•‹ ”‡ƒ•‡†ˆ”‘ͶǤͶά–‘͹ǤͶάǡ–Š‡’ƒ’‡”‰”‡ƒ•‡ ”‡•‹•–ƒ ‡‰”ƒ†‡™ƒ•‹ ”‡ƒ•‡†ˆ”‘ͽ–‘Ϳǡ–Š‡‘„„˜ƒŽ—‡™ƒ•†‡ ”‡ƒ•‡†ˆ”‘͸͸Ǥͼ;ΰͶǤ͸Ϳ‰Ȁ ͸  –‘ͷ;Ǥ͹ͽΰͶǤͼ͹‰Ȁ ͸ ǡ–Š‡ ‘–ƒ –ƒ‰Ž‡™ƒ•‹ ”‡ƒ•‡†ˆ”‘ͼͽǤ;͸λ–‘Ϳ͹Ǥͻͼλǡƒ†–Š‡Ž‘‰‹–—†‹ƒŽ ƒ†–”ƒ•˜‡”•‡–‡•‹Ž‡‹†‡š™‡”‡‹ ”‡ƒ•‡†ˆ”‘ͼͽǤͽ͸ΰͶǤ͸ͷȀ‰ƒ†͹ͽǤͼ͹ΰͶǤ͸ͻȀ‰–‘ ͼ;ǤͼͷΰͶǤͻͻȀ‰ƒ†ͺͶǤͽͷΰͶǤͽ;Ȁ‰ǡ”‡•’‡ –‹˜‡Ž›ǤŠ‡–Š‡ †‘•ƒ‰‡™ƒ•͹ǤͶάƒ† –Š‡ ‘ƒ–‹‰™‡‹‰Š–‘ˆȀ ™ƒ•ͺǤͶ‰Ȁ ͸ ǡ–Š‡‰”‡ƒ•‡”‡•‹•–ƒ ‡‰”ƒ†‡‘ˆ–Š‡’ƒ’‡”™ƒ•ͷ͸ǡ –Š‡‘„„˜ƒŽ—‡™ƒ•͸ͷǤ;ͶΰͶǤ͹Ϳ‰Ȁ ͸ ǡƒ†–Š‡Ž‘‰‹–—†‹ƒŽƒ†–”ƒ•˜‡”•‡–‡•‹Ž‡‹†‹ ‡•™‡”‡ ͽ͸ǤͷͷΰͶǤͺ͹Ȁ‰ƒ†ͺ͸Ǥͻ;ΰͶǤͺ;Ȁ‰ǡ”‡•’‡ –‹˜‡Ž›Ǥ •—ƒ”›ǡ–Š‡‹ ”‡ƒ•‡‘ˆ • ƒ ‡ơ‡ –‹˜‡Ž›‹’”‘˜‡–Š‡Ž‹’‘’Š‘„‹ ‹–›ǡŠ›†”‘’Š‘„‹ ‹–›ƒ†–‡•‹Ž‡•–”‡‰–Š‘ˆ–Š‡ ‘ƒ–‡†’ƒ’‡”Ǥ Grease-proof paper is a kind of paper with resistance to grease penetration and absorption, which is used in industrial, medical, food, and other packaging fields 1 . Most paper cannot prevent the decay and deterioration of goods by preventing grease, water, and oxygen transmission 2 . Therefore, plastic films such as polyethylene (PE) and polypropylene (PP) are used to improve the hydrophobic and oleophobic properties of paper 3 . However, most petroleum-based plastics are non-biodegradable, non-renewable, and have low recyclability 4 . Moreover, microplastics also threaten human health through the food chain 5 . In addition, fluorine-containing oil repellent is widely used in the production of grease-proof paper as an excellent grease-proof coating liquid 6 . But most fluorinated packaging materials release non-biodegradable perfluoroalkyl substances during the composting process, which are not only harmful to the environment but also to human beings 7 . Thus, safe, and environ- mentally friendly new fluorine-free oil-repellent materials have become a research hotspot, such as degradable polymers, nanocellulose, and chitosan, et al. 8–10 . The porous structure of paper is inherently oil-absorbing by means of capillary force, and cellulose surface is also oleophilic, therefore, surface coating is an effective method to prevent oil/grease from penetrating into the interior of the paper according to the pore blocking theory 11 . Polyvinyl alcohol (PVA) is a white water-soluble polymer compound with strong adhesion, smoothness, oil resistance, and solvent resistance 12–14 . It is an envi- ronmentally friendly functional material that can be degraded into water and carbon dioxide by bacteria and enzymes 15 . Therefore, PVA is widely used in papermaking as an environmentally friendly oil repellent material. The PVA coating can significantly improves the oleophobicity of paper, but the hydrophobicity of paper decreases due to the hydrophilicity of PVA. Shen et al. 16 reported that the addition of alkyl ketene dimer (AKD) in PVA coating improved the hydrophobic property of paper, but the grease-proof property decreased. Therefore, the hydrophilic property of PVA limits its application as an oil repellent material.

ͷ ‘ŽŽ‡‰‡ ‘ˆ ‡š–‹Ž‡  ‹‡ ‡ ƒ† ‰‹‡‡”‹‰ ȋ –‡”ƒ–‹‘ƒŽ •–‹–—–‡ ‘ˆ ‹ŽȌǡ Š‡Œ‹ƒ‰  ‹Ǧ‡ Š ‹˜‡”•‹–›ǡ ƒ‰œŠ‘— ͹ͷͶͶͷ;ǡ Š‡Œ‹ƒ‰ǡ Š‹ƒǤ ͸ Š‡Œ‹ƒ‰ ‹ Šƒ‰’‡ ‹ƒŽ–›ƒ’‡”‘Ǥǡ–†Ǥǡ—œŠ‘—͹͸ͺͺͶͺǡŠ‡Œ‹ƒ‰ǡ China. * ‡ƒ‹Žǣš‹š‹‰š‹ƒ͸ͶͶͶ̻ Š‘–ƒ‹ŽǤ ‘

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(2022) 12:16148

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